San Gabriel Mountains National Monument
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San Gabriel Mountains National Monument:see San Gabriel MountainsSan Gabriel Mountains,
S Calif., E and NE of Los Angeles, running c.50 mi (80 km) westward from Cajon Pass. Mt. San Antonio, also known as Mt. Baldy (10,080 ft/3,072 m), is the highest peak of the range, which also includes Mt. Wilson, site of the Mount Wilson Observatory.
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